1 // Copyright (C) 2017-2020 Free Software Foundation, Inc.
2 //
3 // This file is part of the GNU ISO C++ Library. This library is free
4 // software; you can redistribute it and/or modify it under the
5 // terms of the GNU General Public License as published by the
6 // Free Software Foundation; either version 3, or (at your option)
7 // any later version.
8
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
13
14 // You should have received a copy of the GNU General Public License along
15 // with this library; see the file COPYING3. If not see
16 // <http://www.gnu.org/licenses/>.
17
18 // { dg-options "-std=gnu++17" }
19 // { dg-do run { target c++17 } }
20
21 #include <filesystem>
22 #include <testsuite_hooks.h>
23 #include <testsuite_fs.h>
24
25 using std::filesystem::path;
26 using __gnu_test::compare_paths;
27
28 // Normalize directory-separators
operator ""_norm(const char * s,std::size_t n)29 std::string operator""_norm(const char* s, std::size_t n)
30 {
31 std::string str(s, n);
32 #if defined(__MING32__) || defined(__MINGW64__)
33 for (auto& c : str)
34 if (c == '/')
35 c = '\\';
36 #endif
37 return str;
38 }
39
40 void
test01()41 test01()
42 {
43 // C++17 [fs.path.gen] p5
44 compare_paths( path("/a/d").lexically_relative("/a/b/c"), "../../d"_norm );
45 compare_paths( path("/a/b/c").lexically_relative("/a/d"), "../b/c"_norm );
46 compare_paths( path("a/b/c").lexically_relative("a"), "b/c"_norm );
47 compare_paths( path("a/b/c").lexically_relative("a/b/c/x/y"), "../.."_norm );
48 compare_paths( path("a/b/c").lexically_relative("a/b/c"), "." );
49 compare_paths( path("a/b").lexically_relative("c/d"), "../../a/b"_norm );
50 }
51
52 void
test02()53 test02()
54 {
55 path p = "a/b/c";
56 compare_paths( p.lexically_relative(p), "." );
57 compare_paths( p.lexically_relative("a/../a/b/../b/c/../c/."), "../../b/c"_norm );
58 compare_paths( p.lexically_relative("../../../"), "" );
59
60 compare_paths( path("a/./.").lexically_relative("a"), "./."_norm );
61 }
62
63 void
test03()64 test03()
65 {
66 // LWG 3096
67 compare_paths( path("/dir").lexically_relative("/dir"), "." );
68 compare_paths( path("/dir").lexically_relative("/dir/"), "." );
69 compare_paths( path("/dir").lexically_relative("/dir/."), "." );
70
71 compare_paths( path("/dir/").lexically_relative("/dir"), "." );
72 compare_paths( path("/dir/").lexically_relative("/dir/"), "." );
73 compare_paths( path("/dir/").lexically_relative("/dir/."), "." );
74
75 compare_paths( path("/dir/.").lexically_relative("/dir"), "." );
76 compare_paths( path("/dir/.").lexically_relative("/dir/"), "." );
77 compare_paths( path("/dir/.").lexically_relative("/dir/."), "." );
78 }
79
80 void
test04()81 test04()
82 {
83 #if defined(__MING32__) || defined(__MINGW64__)
84 // DR 3070
85 compare_paths(path("c:/f:o/bar").lexically_relative("c:/f:o/bar"), ".");
86 compare_paths(path("c:/foo/bar").lexically_relative("c:/foo/b:r"), "..\\bar");
87 compare_paths(path("c:/foo/b:r").lexically_relative("c:/foo/bar"), "..\\b:r");
88 compare_paths(path("c:/foo/b:").lexically_relative("c:/foo/b:"), "");
89 compare_paths(path("c:/foo/bar").lexically_relative("c:/foo/b:"), "");
90 compare_paths(path("c:/f:/bar").lexically_relative("c:/foo/bar"), "");
91 compare_paths(path("foo/bar").lexically_relative("foo/b:/bar"), "");
92 #endif
93 }
94
95 int
main()96 main()
97 {
98 test01();
99 test02();
100 test03();
101 test04();
102 }
103